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Create Text Messaging Sender Registration

post
https://a.klaviyo.com/api/text-messaging-sender-registrations

Submit a new registration for an existing sender (resubmission).

Rate limits:
Burst: 1/s
Steady: 15/m

Scopes:
sender-config:write

OpenAPI Spec

Query Params
fields[text-messaging-sender-registration]
array of strings

For more information please visit https://developers.klaviyo.com/en/v2026-10-15/reference/api-overview#sparse-fieldsets

fields[text-messaging-sender-registration]
Allowed:
fields[text-messaging-sender]
array of strings

For more information please visit https://developers.klaviyo.com/en/v2026-10-15/reference/api-overview#sparse-fieldsets

fields[text-messaging-sender]
include
array of strings

For more information please visit https://developers.klaviyo.com/en/v2026-10-15/reference/api-overview#relationships

include
Allowed:
Body Params

Submit a new registration for an existing text-messaging sender.

data
object
required
Headers
string
required
Defaults to 2026-10-15

API endpoint revision (format: YYYY-MM-DD[.suffix])

Responses

Updated about 3 hours ago

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